:root {
  color-scheme: dark;

  --ink: #f4f1fb;
  --ink-soft: #c3bbdd;
  --line: rgba(255, 255, 255, 0.14);

  --violet: #8b5cf6;
  --violet-2: #a78bfa;
  --violet-soft: rgba(139, 92, 246, 0.18);
  --rose: #fb7185;
  --rose-2: #f43f5e;
  --rose-soft: rgba(251, 113, 133, 0.18);
  --teal: #2dd4bf;
  --teal-2: #14b8a6;
  --teal-soft: rgba(45, 212, 191, 0.18);
  --amber: #fbbf24;

  --glass: rgba(255, 255, 255, 0.06);
  --glass-strong: rgba(255, 255, 255, 0.1);
  --shadow: 0 1px 1px rgba(0, 0, 0, 0.2), 0 20px 60px rgba(20, 8, 50, 0.45);
  --glow-violet: 0 0 0 1px rgba(139, 92, 246, 0.35), 0 18px 45px rgba(139, 92, 246, 0.22);
  --glow-teal: 0 0 0 1px rgba(45, 212, 191, 0.35), 0 18px 45px rgba(45, 212, 191, 0.2);

  --residue-aromatic: #fbbf24;
  --residue-positive: #fb7185;
  --residue-negative: #60a5fa;
  --residue-polar: #2dd4bf;
  --residue-hydrophobic: #f97316;
  --residue-structural: #a78bfa;

  --display: "Space Grotesk", "Sora", "Segoe UI", sans-serif;
  --sans: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", "Fira Code", ui-monospace, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  min-height: 100%;
  max-width: 100%;
  overflow-x: hidden;
  background: #100a26;
}

body {
  margin: 0;
  min-height: 100vh;
  max-width: 100%;
  position: relative;
  overflow-x: hidden;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background: radial-gradient(ellipse 120% 80% at 15% -10%, #2b1a5e 0%, transparent 55%),
    radial-gradient(ellipse 100% 80% at 100% 0%, #5b1a45 0%, transparent 50%),
    radial-gradient(ellipse 90% 70% at 50% 120%, #0d3f43 0%, transparent 55%),
    linear-gradient(160deg, #100a26 0%, #1a1035 45%, #170e2e 100%);
}

/* ── Decorative blobs ─────────────────────────────────── */

.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
  z-index: 0;
  pointer-events: none;
}

.bg-blob-1 {
  width: 34rem;
  height: 34rem;
  top: -12rem;
  left: -10rem;
  background: radial-gradient(circle, var(--violet) 0%, transparent 70%);
  animation: drift-a 22s ease-in-out infinite;
}

.bg-blob-2 {
  width: 28rem;
  height: 28rem;
  top: 8rem;
  right: -12rem;
  background: radial-gradient(circle, var(--rose) 0%, transparent 70%);
  animation: drift-b 26s ease-in-out infinite;
}

.bg-blob-3 {
  width: 30rem;
  height: 30rem;
  bottom: -14rem;
  left: 20%;
  background: radial-gradient(circle, var(--teal) 0%, transparent 70%);
  animation: drift-c 30s ease-in-out infinite;
}

@keyframes drift-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(3rem, 2rem) scale(1.08); }
}

@keyframes drift-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-2.5rem, 3rem) scale(1.06); }
}

@keyframes drift-c {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(2rem, -2rem) scale(1.1); }
}

@media (prefers-reduced-motion: reduce) {
  .bg-blob {
    animation: none;
  }
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 980px;
  margin: 0 auto;
  padding: 4rem 1.5rem 5rem;
}

/* ── Site nav ─────────────────────────────────────────── */

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 1.75rem;
  margin-bottom: 0.5rem;
}

.site-nav-brand {
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.site-nav-links {
  display: flex;
  gap: 0.4rem;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem;
}

.site-nav-links a {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}

.site-nav-links a:hover {
  color: var(--ink);
}

.site-nav-links a.active {
  color: #14081f;
  background: linear-gradient(120deg, var(--teal), var(--violet-2));
}

/* ── Masthead ─────────────────────────────────────────── */

.masthead {
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  text-align: center;
}

.masthead .eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: var(--teal-soft);
  border: 1px solid rgba(45, 212, 191, 0.35);
}

.masthead h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0 0 1rem;
  text-wrap: balance;
}

.masthead h1 .accent-word {
  background: linear-gradient(120deg, var(--violet-2), var(--rose), var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.masthead p {
  margin: 0 auto;
  max-width: 52ch;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.tag-pill {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.tag-violet {
  background: var(--violet-soft);
  color: var(--violet-2);
  border-color: rgba(139, 92, 246, 0.4);
}

.tag-rose {
  background: var(--rose-soft);
  color: var(--rose);
  border-color: rgba(251, 113, 133, 0.4);
}

.tag-teal {
  background: var(--teal-soft);
  color: var(--teal);
  border-color: rgba(45, 212, 191, 0.4);
}

/* ── Project banner ───────────────────────────────────── */

.project-banner {
  background: linear-gradient(120deg, rgba(139, 92, 246, 0.12), rgba(45, 212, 191, 0.1));
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  padding: 1.15rem 1.5rem;
  margin-bottom: 2.5rem;
  backdrop-filter: blur(14px);
}

.project-banner p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.project-banner strong {
  color: var(--ink);
}

.project-banner a {
  color: var(--teal);
  font-weight: 600;
  text-decoration-thickness: 1.5px;
}

/* ── Layout ───────────────────────────────────────────── */

.assay {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.75rem;
  align-items: start;
}

@media (max-width: 720px) {
  .assay {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 1.9rem;
  backdrop-filter: blur(18px);
}

.card-violet {
  box-shadow: var(--shadow), var(--glow-violet);
}

.card-teal {
  box-shadow: var(--shadow), var(--glow-teal);
}

.card h2 {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.2rem;
  margin: 0 0 1.4rem;
}

.card-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet-2), var(--teal));
  flex-shrink: 0;
}

.card-teal .card-dot {
  background: linear-gradient(135deg, var(--teal), var(--rose));
}

.field-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 1.1rem 0 0.5rem;
}

.field-label:first-of-type {
  margin-top: 0;
}

textarea,
select {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea {
  font-family: var(--mono);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  resize: vertical;
  min-height: 4.5rem;
}

textarea::placeholder {
  font-family: var(--sans);
  text-transform: none;
  letter-spacing: normal;
  color: var(--ink-soft);
  opacity: 0.6;
}

textarea:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.25);
}

select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%),
    linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%);
  background-position: calc(100% - 18px) center, calc(100% - 13px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 2.25rem;
}

button {
  margin-top: 1.6rem;
  width: 100%;
  font: inherit;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1rem;
  color: #14081f;
  background: linear-gradient(120deg, var(--teal), var(--violet-2) 55%, var(--rose));
  background-size: 200% 100%;
  background-position: 0% 0%;
  border: none;
  border-radius: 12px;
  padding: 0.85rem;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.35);
  transition: background-position 0.35s ease, transform 0.05s ease, box-shadow 0.15s ease;
}

button:hover:not(:disabled) {
  background-position: 100% 0%;
  box-shadow: 0 14px 36px rgba(139, 92, 246, 0.45);
}

button:active:not(:disabled) {
  transform: translateY(1px);
}

button:disabled {
  opacity: 0.55;
  cursor: default;
}

/* ── Readout panel ────────────────────────────────────── */

.readout {
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

.readout-empty {
  color: var(--ink-soft);
  font-size: 0.95rem;
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 1.75rem;
  text-align: center;
  margin: auto 0;
}

.readout-body {
  animation: rise 0.35s ease both;
}

@media (prefers-reduced-motion: reduce) {
  .readout-body {
    animation: none;
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.organism-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-bottom: 1.1rem;
}

.gram-pill {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  font-weight: 600;
}

.gram-pill.positive {
  background: var(--violet-soft);
  color: var(--violet-2);
}

.gram-pill.negative {
  background: var(--rose-soft);
  color: var(--rose);
}

.mic-figure {
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.35rem;
  margin-bottom: 1.35rem;
}

.mic-value {
  font-family: var(--display);
  font-weight: 700;
  font-size: 2.8rem;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(120deg, var(--teal), var(--violet-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.mic-value .unit {
  font-size: 1.1rem;
  font-family: var(--sans);
  font-weight: 500;
  color: var(--ink-soft);
  margin-left: 0.35rem;
  background: none;
  -webkit-text-fill-color: var(--ink-soft);
}

.mic-caption {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 0.4rem;
}

.chain-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.7rem;
}

.chain {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 1.1rem;
}

.residue {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: #14081f;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1rem;
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin-bottom: 1.3rem;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-swatch {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 2px;
  display: inline-block;
}

.warnings {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.warnings li {
  font-size: 0.85rem;
  color: var(--amber);
  padding-left: 1rem;
  position: relative;
}

.warnings li::before {
  content: "\2013";
  position: absolute;
  left: 0;
}

.error-box {
  border: 1px solid rgba(251, 113, 133, 0.5);
  background: var(--rose-soft);
  color: var(--rose);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
}

footer {
  position: relative;
  z-index: 1;
  margin-top: 3.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-soft);
  text-align: center;
}

footer p {
  margin: 0 0 0.6rem;
}

footer p:last-child {
  margin-bottom: 0;
}

.footer-credit {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

.footer-credit a {
  color: var(--teal);
}